US4641786A - Nozzle for cryogenic cleaning apparatus - Google Patents
Nozzle for cryogenic cleaning apparatus Download PDFInfo
- Publication number
- US4641786A US4641786A US06/682,262 US68226284A US4641786A US 4641786 A US4641786 A US 4641786A US 68226284 A US68226284 A US 68226284A US 4641786 A US4641786 A US 4641786A
- Authority
- US
- United States
- Prior art keywords
- nozzle
- pellets
- constriction
- nozzle body
- support means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
Definitions
- This invention relates to blast cleaning devices which use solid cryogenic particles as the cleaning medium.
- the invention relates more particularly to an improved nozzle which accelerates such solid particles to a high velocity by means of air pressure for purposes of impacting a surface to be cleaned.
- Nozzles are known in which the air pressure and pellets entering the nozzle are accelerated to a sonic velocity which is then suitable for cleaning a contaminated surface.
- known devices of this type do not provide an adequate sealing means for the cryogenic temperatures involved. They also do not provide the proper nozzle size or nozzle length so as to be compatible with the type of pellets and amount of air being discharged.
- FIG. 1a and b is a top view of a nozzle of this invention
- FIG. 2a and b is a side view of the nozzle of FIG. 1 which illustrates the pellet passage sealing means, nozzle interchange and safety devices;
- FIG. 3 is a section taken along line 3--3 of FIG. 1;
- FIG. 4 is a view taken along line 4--4 of FIG. 2;
- FIG. 5 is an enlarged view illustrating the relative size of pellets and nozzle constriction.
- the blast nozzle accelerates pellets entering the nozzle to a sonic velocity which is then suitable for cleaning a contaminated surface.
- the device has a quick change nozzle arrangement to accommodate different nozzle sizes for accomplishing specific cleaning purposes.
- the nozzle also fractures the pellets on entry to the nozzle section and produces irregular and ragged edges on the particles for more effective cleaning.
- An entry tube 1 is positioned adjacent to a base plate 12 to which is mounted a forearm stabilizer 2 which allows clearance between an operator's arm and a transport hose.
- An optional handle 17 is provided.
- a system for producing pellets is disclosed and claimed in copending application Ser. No. 636,372 which is assigned to the Assignee of the invention.
- Pellets 28 (FIG. 5) from the pellet source, not shown, flow through a flexible transport hose, not shown, to tube 1 and thence into the nozzle area where they are accelerated to sonic velocity and fractured to produce ragged edges for greater abrasive ability.
- a support means comprising generally an entry tube 1, the entry guide 3, a spacer 5, a locating boss 15 and handles 17 and 20 support a nozzle 19.
- the entry tube is held in place by a spacer 5 which is located between an entry guide 3 and a locating boss 14.
- This assembly allows an operator to rotate the nozzle assembly about its longitudal axis within the limits of rotation of the stop 13 which comprises about 90° either side of the vertical handle position.
- the nozzle 19 slides into the guidesleeve 9 and is rotated to a locked position in a bayonette block 8.
- the antirotation latch 10 which is spring loaded by spring 16 locks the nozzle to prevent rotating and unlocking.
- the latch release handle 15 unlocks the nozzle for removal.
- the nozzle seal 11 is retained in the nozzle and provides sealing between the entry tube and the nozzle entrance against air leakage.
- a pistol grip handle 20 supports a trigger 22.
- FIG. 5 illustrates the cross sectional sizes of a cryogenic pellet 28 and the nozzle constriction 30. In view of their relative sizes, fracturing of the pellets occurs and results in a more abrasive pellet surface which enchances cleaning characteristics.
- An improved blast nozzle has thus been described for use with a cryogenic blast clearing apparatus.
- the nozzle advantageously facilitates substitution of members to meet specific applications, provides for fracturing incoming pellets and provides an enhanced seal.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims (3)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/682,262 US4641786A (en) | 1984-12-14 | 1984-12-14 | Nozzle for cryogenic cleaning apparatus |
PCT/US1985/002467 WO1986003708A1 (en) | 1984-12-14 | 1985-12-12 | Nozzle for cryogenic cleaning apparatus |
AU53018/86A AU5301886A (en) | 1984-12-14 | 1985-12-12 | Nozzle for cryogenic cleaning apparatus |
EP86900496A EP0204838A1 (en) | 1984-12-14 | 1985-12-12 | Nozzle for cryogenic cleaning apparatus |
NL8520445A NL8520445A (en) | 1984-12-14 | 1985-12-12 | NOZZLE FOR CRYGENE CLEANER. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/682,262 US4641786A (en) | 1984-12-14 | 1984-12-14 | Nozzle for cryogenic cleaning apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US4641786A true US4641786A (en) | 1987-02-10 |
Family
ID=24738924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/682,262 Expired - Fee Related US4641786A (en) | 1984-12-14 | 1984-12-14 | Nozzle for cryogenic cleaning apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US4641786A (en) |
EP (1) | EP0204838A1 (en) |
AU (1) | AU5301886A (en) |
NL (1) | NL8520445A (en) |
WO (1) | WO1986003708A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4843770A (en) * | 1987-08-17 | 1989-07-04 | Crane Newell D | Supersonic fan nozzle having a wide exit swath |
US5018667A (en) * | 1989-02-08 | 1991-05-28 | Cold Jet, Inc. | Phase change injection nozzle |
US5417371A (en) * | 1993-03-09 | 1995-05-23 | Brackett; Alan C. | Fire hose nozzle foam expansion apparatus |
US5514024A (en) * | 1993-11-08 | 1996-05-07 | Ford Motor Company | Nozzle for enhanced mixing in CO2 cleaning system |
US5609302A (en) * | 1995-04-19 | 1997-03-11 | Smith; William C. | Removable spray gun fluid flow assembly |
US6209807B1 (en) * | 1998-07-13 | 2001-04-03 | Wang Hsin-Fa | Quickly installed spray nozzle |
US20120171934A1 (en) * | 2009-09-23 | 2012-07-05 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Cryogenic fluid stream dispensing device with polymer joint having given expansion coefficient |
US11780051B2 (en) | 2019-12-31 | 2023-10-10 | Cold Jet, Llc | Method and apparatus for enhanced blast stream |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5377911A (en) * | 1993-06-14 | 1995-01-03 | International Business Machines Corporation | Apparatus for producing cryogenic aerosol |
US5486132A (en) * | 1993-06-14 | 1996-01-23 | International Business Machines Corporation | Mounting apparatus for cryogenic aerosol cleaning |
US5366156A (en) * | 1993-06-14 | 1994-11-22 | International Business Machines Corporation | Nozzle apparatus for producing aerosol |
ATE193853T1 (en) * | 1995-10-30 | 2000-06-15 | Birgit Papcke | METHOD FOR SURFACE TREATMENT, IN PARTICULAR CLEANING OF SURFACES WITH CO2 DRY ICE GRANULES AND A DEVICE FOR CARRYING OUT THIS METHOD |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2836013A (en) * | 1957-01-24 | 1958-05-27 | Brant And Nielsen Company | Sand blasting apparatus |
US3705693A (en) * | 1971-07-16 | 1972-12-12 | Norman Franz | Means for sealing fittings and nozzle assemblies at extremely high fluid pressures |
SU899151A1 (en) * | 1980-03-21 | 1982-01-23 | За витель 54) СВЕРХЗВУКОВОЕ СОПЛО ШЕСТЕРЕНКО Н.А.Шестеренке /.. .,/ | Supersonic nozzle |
US4478368A (en) * | 1982-06-11 | 1984-10-23 | Fluidyne Corporation | High velocity particulate containing fluid jet apparatus and process |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3228147A (en) * | 1963-10-11 | 1966-01-11 | Pangborn Corp | Nozzle assembly for abrasive blasting apparatus |
SU889151A1 (en) * | 1980-03-19 | 1981-12-15 | Центральный Научно-Исследовательский Институт Лесосплава "Цниилесосплав" | Conveyer mechanism for sorting elongated piece objects |
-
1984
- 1984-12-14 US US06/682,262 patent/US4641786A/en not_active Expired - Fee Related
-
1985
- 1985-12-12 WO PCT/US1985/002467 patent/WO1986003708A1/en unknown
- 1985-12-12 NL NL8520445A patent/NL8520445A/en unknown
- 1985-12-12 AU AU53018/86A patent/AU5301886A/en not_active Abandoned
- 1985-12-12 EP EP86900496A patent/EP0204838A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2836013A (en) * | 1957-01-24 | 1958-05-27 | Brant And Nielsen Company | Sand blasting apparatus |
US3705693A (en) * | 1971-07-16 | 1972-12-12 | Norman Franz | Means for sealing fittings and nozzle assemblies at extremely high fluid pressures |
SU899151A1 (en) * | 1980-03-21 | 1982-01-23 | За витель 54) СВЕРХЗВУКОВОЕ СОПЛО ШЕСТЕРЕНКО Н.А.Шестеренке /.. .,/ | Supersonic nozzle |
US4478368A (en) * | 1982-06-11 | 1984-10-23 | Fluidyne Corporation | High velocity particulate containing fluid jet apparatus and process |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4843770A (en) * | 1987-08-17 | 1989-07-04 | Crane Newell D | Supersonic fan nozzle having a wide exit swath |
US5018667A (en) * | 1989-02-08 | 1991-05-28 | Cold Jet, Inc. | Phase change injection nozzle |
US5417371A (en) * | 1993-03-09 | 1995-05-23 | Brackett; Alan C. | Fire hose nozzle foam expansion apparatus |
US5514024A (en) * | 1993-11-08 | 1996-05-07 | Ford Motor Company | Nozzle for enhanced mixing in CO2 cleaning system |
US5609302A (en) * | 1995-04-19 | 1997-03-11 | Smith; William C. | Removable spray gun fluid flow assembly |
US6209807B1 (en) * | 1998-07-13 | 2001-04-03 | Wang Hsin-Fa | Quickly installed spray nozzle |
US20120171934A1 (en) * | 2009-09-23 | 2012-07-05 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Cryogenic fluid stream dispensing device with polymer joint having given expansion coefficient |
US11780051B2 (en) | 2019-12-31 | 2023-10-10 | Cold Jet, Llc | Method and apparatus for enhanced blast stream |
Also Published As
Publication number | Publication date |
---|---|
WO1986003708A1 (en) | 1986-07-03 |
AU5301886A (en) | 1986-07-22 |
EP0204838A1 (en) | 1986-12-17 |
NL8520445A (en) | 1986-11-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CRYOBLAST, INC., 441 MORGAN ST., CINCINNATI, OH A Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MOORE, DAVID E.;REEL/FRAME:004379/0602 Effective date: 19850129 |
|
REMI | Maintenance fee reminder mailed | ||
FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19910210 |